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...The preferred method of abstract and tutorial proposal submission is via the web form at the conference website: http://biostat.mc.vanderbilt.edu/wiki/Main/useR-2012#Online_Submission Participants may register online beginning January 23rd. If earlier registration is preferred, please contact Stephania McNeal-Goddard using the contact information here: http://biostat.mc.vanderbilt.edu/wiki/Main/useR-2012#Contact See http://journal.r-project.org/archive/2011-2/RJournal_2011-2.pdf for an article about the conference with more details, including a list of some of the major Nashville area entert...

Dear R-help members I would be grateful if anyone could help me with the following problem: I would like to combine two matrices (SCH_15 and SCH_16, they are attached) which have a species presence/absence x sampling plot structure. The aim would be to have in the end only one matrix which shows all existing species and their presence/absence on all the different plots(an_1, an_2 etc.) To do